Baph0met
Super late, but from what I gather the original work that this story was translated from the author explained he wanted to do more like the Venom universe, Kamen Rider, Super Sentai, Ultraman, even Peni Parker's Eva, but he lost balance between the comic universe and the movie universe. He left to many holes for him to fill so it felt like a big blow to him.
I was expecting at least one more arc resolving everything the weaver did, improving the lives of the spiders, with them celebrating their victory and the end of their ongoing misery... Resolving the outstanding issues left unresolved... Killing the remaining heir, young Karn... If you can make an arc like that, it would be very nice. Just please don't do something stupid like just telling what happened, or showing it out of the blue 5 years later, 10 years later... If you're going to do that, it's better to end it here.